Turn on thread page Beta
 You are Here: Home >< Maths

# Edexcel A2 C4 Mathematics June 2015 - Official Thread watch

1. (Original post by Toussaint)
I've been **** at C4 all year so I'm really pleased with how this paper went, will check when Arsey does his thing but I reckon I'm on 45-50/75 which should secure my B.
Hoping the same, I'm in the exact same situation as you!
2. I messed that up so much.
3. (Original post by Fanta4TheBanter)
Did anyone else just use a substitution on the last question? It made it so much easier.
Yes I did What substitution did you use?
4. I DID PSYA 4 THIS MORNING TOO it went well and then there was this exam xD
(Original post by dominicwild)
Method marks are my best friend. I'm realizing silly mistakes I've made >.< Like
I looked at the 3 and was multiplying by 2, so my brain did a dumb. RIP all answer marks to that question.

It sucks when questions require those pre-requisites. Coming from PSYA4 I didn't have much time to effectively revise C4.
5. (Original post by emu_neutrino)
yeah i did that as i havent really done intergation of a^x that much and didnt want to risk screwing it up so I put 3^x equal to u and i got 13pi/ln3 which seems to be what a lot of other people got.
There is a general rule for the differentiation and integration of ; they involve multiplying and dividing by respectively. So you're probably correct.
6. (Original post by anorris13)
How many marks would I lose for getting the wrong value of X for Q? I got the correct equation and correct integration for b, but got the x co word wrong which will also have affected my cone? I am thinking 4?
You could only lose 1 mark in second prt. So 3 in the whole quest i reckon.
7. (Original post by Emmi12345)
I'm mortified. Everyone will see my idiotic post in the tags now, oops!
The hardest part of my French exam was doing the word count at the end... due to stress. It looked like I couldn't even count to 400, hehe.
Ability to count to 400 isn't a prerequisite for sitting in C4 though.

know, exams can stress you out in funny ways, ways you never thought were even possible.
8. (Original post by HMusa)
3c... Is that 32ln2 - 12 then after simplification? Since you've not put brackets it seems like +12 but I'm pretty sure I got - 12...not saying you're wrong. Just want to know for peace of mind
Pretty sure it's +12 but not 100% sure
9. i got -12 too buddy
10. The paper was hard in my opinion. Looking at the answers I think I've got at least 66/75. What UMS would that be equal to approximately? Also, I used 4000 instead of 4 for the differential equation question. How many marks could I get for that? Also, I got the wrong angle for the vectors question, and thus got a different answer for the length in the next part. Will I get any marks for it?
11. (Original post by RH0909)
Also... for the vector question, I made a super silly mistakes in part one... which means I got the whole question wrong... I feel so bad right now. But I think for part 2&3, my method were correct and all the steps were written clearly. So do I get any follow through marks at all? Or I‘ll get zero in that question? plz help me!!

anyone?
12. Unofficial Mark scheme anyone?
13. VOTE NOW ON HOW YOU FOUND THIS EXAM
Note: C4 JUNE 2015 UK paper ONLY!
14. What the hell is the a=2 and b=-5 on Q5 about, I don't remember writing that....
15. (Original post by anndz3007)
for the ln2 question, did anyone get 32(ln2 square)-32ln2+12 ??
Yes but I simplified the logs (cant remembere if it asked for it in its simplest form tho)
16. I integrated 3^2x as 3^2x/In3 which i now realise is wrong. Do i lose all the marks after this? or if i subbed in right etc could i still get some
17. (Original post by HMusa)
3c... Is that 32ln2 - 12 then after simplification? Since you've not put brackets it seems like +12 but I'm pretty sure I got - 12...not saying you're wrong. Just want to know for peace of mind
You can't simplify (ln 2)^2 as 2ln 2 since the whole ln was squared.
18. (Original post by HItchslapped)
VOTE NOW ON HOW YOU FOUND THIS EXAM
Note: C4 JUNE 2015 UK paper ONLY!
you need to be hitched somewhere and be slapped!

stop the spamming
19. Got k=2 instead of k=4, would I get ECF marks?
20. (Original post by physicsmaths)
You could only lose 1 mark in second prt. So 3 in the whole quest i reckon.
Thank you this has put my mind at ease, made such a stupid mistake, but I was rushing towards the end

Turn on thread page Beta

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: April 20, 2016
Today on TSR

### Summer Bucket List is Back!

Start yours and you could win £150!

Poll
Useful resources

## Make your revision easier

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE